Overview
CSS stands for Cascading Style Sheets. It's provides a mechanism to separate the presentation of your HTML page from the logical structure and content of your HTML page.
Referencing a Style Sheet
Style Block
The easiest way to include CSS in your WebObject application is put a style block in your <head> tag:
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<style type="text/css">
table {
border-style: solid;
border-color: black;
border-width: 1px;
}
</style>
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Static Reference
Another easy way to use CSS in your WebObjects application is to include a static reference to it with:
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However, if you're a WO developer, you know static resource references feel dirty. Don't worry, there are alternatives.
Project WOnder
Project WOnder provides ERXStyleSheet, which is a stateless component with a template that can generate link tags for you.
Mike Schrag's MDTStyleSheet
The following dynamic element can be used to include a stylesheet in your page. It supports the bindings "rel", "type", "href", "src", etc similar to a WOImage.
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import com.webobjects.appserver.WOElement;
import com.webobjects.appserver._private.WOConstantValueAssociation;
import com.webobjects.appserver._private.WOHTMLURLValuedElement;
import com.webobjects.foundation.NSDictionary;
public class MDTStyleSheet extends WOHTMLURLValuedElement {
public MDTStyleSheet(String _name, NSDictionary _assocationsDictionary, WOElement _template) {
super("link", _assocationsDictionary, _template);
if (_associations.objectForKey("rel") == null) {
_associations.setObjectForKey(new WOConstantValueAssociation("stylesheet"), "rel");
}
if (_associations.objectForKey("type") == null) {
_associations.setObjectForKey(new WOConstantValueAssociation("text/css"), "type");
}
}
protected String urlAttributeName() {
return "href";
}
}
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Stylesheet Component
Here is a trivial example on how to define style sheets properties at
runtime:
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<style type = "text/css">
a { color: <webobject name = "LinkColor"></webobject>; text-decoration:none; }
a:hover { color: #ff9933; }
a:visited { color: <webobject name = "LinkColor"></webobject>; }
a:visited:hover { color: #ff9933; }
body { margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; background-color:#FFFFFF; text-align:left; }
input { font: 100% Verdana, Arial, san-serif; }
.Title { font: <webobject name = "TextFont"></webobject>; }
.Label { font: <webobject name = "LabelFont"></webobject>; }
.WhiteLabel { font: <webobject name = "LabelFont"></webobject>; color:#666666; }
.Text { font: <webobject name = "TextFont"></webobject>; }
.MonoText { font: <webobject name = "MessageFont"></webobject>; }
.Quote { font: <webobject name = "MessageFont"></webobject>; font-style: italic; margin-left: 20px; }
.Line { height:1px; background-image:url(<webobject name = "LineUrl"></webobject>); }
.Space { height:8px; }
.Highlight { background-color:#cccccc; }
.DarkHeader { background-image:url(<webobject name = "DarkHeaderUrl"></webobject>); }
.Header { background-image:url(<webobject name = "HeaderUrl"></webobject>); }
.Margin { width: 40px; vertical-align:top; }
.Full { width: 100%; height: 100%; text-align:left; vertical-align:top; }
.FullWidth { width: 100%; text-align:left; vertical-align:top; }
.FillerWidth { width: 99%; text-align:left; vertical-align:top; }
.FillerHeight { height: 99%; }
.HalfWidth { width: 49%; text-align:left; vertical-align:top; }
.OneThirdWidth { width: 33%; text-align:left; vertical-align:top; }
.TwoThirdWidth { width: 66%; text-align:left; vertical-align:top; }
.FixColumn { width: 250px; text-align:left; vertical-align:top; }
.AltMargin { width: 40px; text-align:left; vertical-align:top; background-image:url(<webobject name = "AltUrl"></webobject>);
background-position: center center; background-repeat: no-repeat; }
</style>
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LinkColor: WOString{
value = linkColor;
};
LineUrl: WOString{
value = lineUrl;
};
DarkHeaderUrl: WOString{
value = darkHeaderUrl;
};
HeaderUrl: WOString{
value = headerUrl;
};
AltUrl: WOString{
value = altUrl;
};
LabelFont: WOString{
value = labelFont;
};
TextFont: WOString{
value = textFont;
};
MessageFont: WOString{
value = messageFont;
};
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Related Links
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